Sash-lock.



C; A. EMME.

SASH LOCK.

APPLICATION FILED NOV. 22. 1915.

Patented July 18, 1916.

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SASI-I-LOCK.

Specification of Letters Patent. -Patgfited July 18 1916 Applicationfiled November 22, 1915. Serial No. 62,855.

To all whom it may concern Be it known that I, CHARLES A. EMME, acitizen of the United States, residing at Washington, in the District ofColumbia, have invented new and useful Improvements in Sash-Locks, ofwhich the following is a specification.

This invention contemplates the provision of a window sash lock which isautomatically operable to engage the sash in its different adjustedpositions, and adapted to be held in a fixed relation to the sash whenoperatively associated with the latter.

To this end the invention embodies among other features a yieldablysupported locking element adapted to engage the sash for holding thelatter in adjusted position, together with a single means for lockingsaid element in fixed relation to the sash when in operative position,and for rendering the said element free to yield when the sashis beingadjusted.

The nature and advantages of the inven tion will be better understood asthe following description is read in connection with the accompanyingdrawing, the invention residing in the construction, combination andarrangement of parts as defined in the appended claims.

In the drawing forming part of this specification like numerals ofreference indicate similar-parts in the several views and wherein Figure1 is a front elevation of a fragmentary portion of a window showing themanner of applying my device thereto. Fig. 2 is a sectional view takenon line 2-2 of Fig. 1, the locking element being shown in elevation.Fig. 3 is a sectional View taken on line 33 of Fig. 1, the lockingelement being shown in elevation. Fig. 4 is a perspective view of amodified form of the invention. Fig. 5 is a detail view of the lock ingelement. Fig. 6 is a detail view of the spring. Fig. 7 is a detail Viewof one form of keeper.

Referring to the drawing in detail and particularly Figs. 1 to 3inclusive, the device constructed in accordance with my inventionconsists of an elongated plate 5 adapted to be secured to the windowcasing A in any suitable manner, preferably by means of fasteningelements 6 as shown. Projecting forwardly from the plate 5 adjacent oneend thereof is a pair of spaced apertured lugs 7 through the alinedopenings in which is slidably fitted a locking bolt 8. The bolt isyleldably supported to permit of its automatlc operation to engage thesash B as the latter is either raised or lowered, and as shown in thisparticular instance I employ a spring 9 consisting of a single length ofresilient material having its intermediate portion looped or coiledabout a rivet 10 or the like carried by the plate at a point in itslength, the spring being bent to provide substantially parallel limbs 11and 12 respectively. The limb 11 has its terminal passed through anopening in the locking bolt 8 and operates to maintain this membernormally projected, while the limb 12 has a length considerably greaterthan the limb 11 and extends above the lugs 7, terminating to provideamanipulating portion 13 adapted to be grasped by the user inpositioning the limb 12 to either permit movement of the bolt 8 or tohold the latter fixed relatively to the sash in operative position inthe manner to be presently described.

In normal position the limb 12 is held under tension in spaced relationto the locking bolt 8, by being arranged behind a lug or other suitableprojection 1d extending from one ofthe lugs 7, thus permitting the boltto yield freely against the tension of the limb 11 as the sash isadjusted. In the preferred form of the invention the sash is providedwith suitable openings at spaced intervals, each of which is adapted toreceive a sleeve-like member 15 having associated therewith a collar orhead 16 adapted to engage the outer surface of the sash. The head orcollar 16 presents an inclined surface which causes a retraction of thebolt 8 as the sash is adjusted until the bolt is alined with the openingin the sash, whereupon the limb 11 operates to project the bolt into theopening, and by means of which arrangement the sash may be held in itsadjusted position. Subsequentto this positioning of the parts thelimb 12of the spring is released from behind the lug 13, and through itsinherent resilient action automatically moves into a groove 17 in thebolt, and there by holds the bolt fixed relatively with respect to thesash. Manifestly the window cannot be lowered until the limb 12 of thespring is first moved out of engagement with the bolt 8, and the lattersubsequently retracted from the opening in the sash. This constructionprovides a very eii'ective device" for the purpose intended.

Secured to the plate 5 in any suitable man-.

ner and inclosing a number of the parts including the spring, is acasing or housing 18. As shown a keeper of the type shown in Fig. 7 maybe employed in lieu of the openings in the sash, and consists of a plate19 adapted to be secured to the sash in any suitable manner preferablyby means of a fastening element, such as a nail or the like (not shown)which is passed through the opening 20 in the plate. The plate isprovided with an angularly disposed portion which causes the lock boltto be retracted as the latter is brought into engagement with the plate,the upper edge of the latter being provided with a groove 21 in whichthe bolt is adapted to seat when the bolt is subsequently projectedthrough the medium of the spring as will be readily understood.

of the invention which consists of a substantially U-shaped support 23,the central portion 2 1 of which is provided with openings 25 adjacentits opposite end for the reception of suitable fastening elements for securing the support to the window casing. Slidably fitted through alinedopenings in the parallel portions of the support is a locking bolt 27yieldably supported by means of a spring 29 of a construction similar tothat described in connection with the preferred form of the invention.As shown the spring has its intermediate portion coiled about a rivet 30fixed upon the support, and formed to provide the substantially parallellimbs 31 and 32 respectively. The terminal of the limb 31 is associatedwith the bolt, while the limb 32 extends above the support andterminates to provide a manipulating portion 33 to move the limb 32 intoand out of operative association with the bolt in the manner to bepresently described. One of the parallel portions of the support isformed at its upper edge to provide spaced notches 34 and 35 respectively. Now it will be obvious that when the manipulating portion of thelimb is arranged within the notch 34., the limb is held in spacedrelation to the bolt thereby permitting the latter to slide relative tothe support so as to automatically engage the sash when the latter isadjusted. Subsequent to the operative association of the bolt with thesash the limb 33 is moved into the notch 35, and also into a groove 36in the bolt, thereby locking the latter against movement. It might herebe stated that the various parts of bolt devices hereinabove In Fig. 4 Ihave shown a modified form I described may be constructed from anysuitable material and desired dimensions.

While I have shown and described certain forms of the invention I desireto have it understood that various changes in the construction andarrangement of parts may be resorted to when desired as fall within thescope of the appended claims.

\Vhat is claimed is 1. A device of the class described comprising asupport, a locking element slidably mounted thereon, a spring fixed uponthe support and having branch portions, one of said portions beingassociated with the element to yieldably support the latter, the otherof said branches being adapted to cooperate with said locking element tohold the latter fixed relatively to the support, and means for holdingthe latter mentioned branch in inoperative position.

2. A device of the class described comprising a support, a lockingelement slidably mounted thereon, a spring fixed upon the support andhaving branch portions, one of said branches being associated with saidelement to yieldably support the latter, the other of said branchesbeing adapted to be received within a groove in said element on apredetermined position of the latter, to hold said element fixedrelatively to said support, and means for holding the last mentionedbranch in inoperative position, whereby said element is free for slidingmovement.

3. A device of the class described comprising a substantially U-shapedsupport, a

ocking element slidably mounted through openings in the parallelportions of the support, one of said parallel portions having spacednotches in its upper edge, a spring fixed upon the support and havingrelatively movable branches, one of said branches being associated withsaid element to yieldably support the latter, the other of said branchesbeing adapted to engage said element and be moved into one of saidnotches to hold said locking element fixed in I fiopies of this patentmay be obtained for five cents each, by addressing" the Commissioner ofPatents,

- Washington, D. C.

